Hoisting mechanism



Get. 25, 1932. c, QSGQQD U 1,884,821

HOI STING MECHANISM Filed July 12. 1930 2 sheets sheet 1 l/YVE/YTOR: JFOEL'RT 6. 050000.

Aw; 4' MM Get. 25, 1932. c, QSGOOD 1,884,821

HOISTING MECHANISM Filed July 12. 1930 2 Sheets-Sheet 2 h [/YVE/YTOR: 8 Boa/sm- 6. 05 000.

im; l-Mmmv Patented Oct. 25, 1932 UNITED STATES.

PATENT OFFICE Bonnier c. oseoonon (i am/roar, new HAMPSHIRE, ASSIGNOR T0 SULLIVAN MACHINERY COMPANY, A CORPORATION or MASSACHUSETTS nois'rrne M-nonAN'rsM Application filed-Tilly .12, 1930; Serial No. 467,541;

This invention relates to hoisting mechanisms and more particularly to improvements in double drum hoists of the so-called slusher type especially adapted to use in drag scraper work. From another aspect it relates to improvements in hoists whereby plural speed traction is attainable.

In. accordance with the so-called slusher system of handling ore and like materials a double drum hoist is usually employed for moving tho drag scraper back and forth relative to the material. to be loaded. Such ioists are of a comparatively high powered compact character, and a pair of winding drums, as for instance a haulage drum, and a tail rope drum are usually provided driven from a common source of power. Drag lines or ropes are usually connected to these drums and cooperate with a drag scraper, the latter being movable back and forth relative to the loose material to be handled to convey the latter to a chute or car in a manner well understood in the art. Under certain conditions it has been found highly desirable to provide a multi-speed drive for the haulage drum to thereby obtain a slow speed movementof the drag scraper during its digging and loading functions and to attain a relatively high speed drive of the haulage drum for haul purposes, it also bein highly desirable to drive the tail rope drum at a sim ilar high speed to drag the empty scraper back to its digging and loading position.

It is also desirable to be able, in hoists for other purposes, as well as for slushing, to etlect rotation of a winding drum at different speeds, and with correspondingly different tractive capacities, to handle different loads or meet other varying conditions.

One object of the present invention is to provide improved plural speed driving means for a hoist drum. Another object is to provide improved plural speed, vaiably controllable drivingmechanism for a drum permitting a wide range of control or complete interruption of drive when desired. A

further ob ect of this invention is to provide an improved hoisting mechanism of the double drum slusher type having improved multi-speed driving means for the haulage drum so that the drag scraper may be operated to dig and load and to convey material in an improved manner. Another object is to provlde an improved double drum hoist having an improved plural speed planetary drivlng means for the haulage drum and improved drive control means theretor. A further object is to provide an improved double drum hoist having improved driving and supporting means for the drums and an improved arrangement of the drums on the aforesaid supporting means and improved control means therefor so that the drums may be driven and controlled in an improved manner. These and other objects of this in'- vention will, however, hereinafter more fully appear in the course of the ensuing description and as more particularly pointed out in the appended claims.

In the accompanying drawings there is shown for purposes of illustration one form which the invention may assume in practice.

In these drawings, Fig. 1 is a central longitudinal vertical sectional view through an illustrative embodiment of the improved hoisting mechanism.

Fig. 2 is a transverse vertical sectional View talren substantially on line 22 of Fig. 1.

Fig. 3 is a transverse vertical sectional view talren substantially on line 3-3 of Fig. 1, u

with the brake band operating means shown. in applied position.

In this illustrative embodiment oi" the in vention there is shown a double drum hoist generally designated 1 and having a frame or portable base which has secured thereto upstanding end brackets or supports 3 and 4. As illustrated, detachably secured at one end to the frame 2 is a supplemental base frame 5 and this supplemental base frame forms a support for a motor 6 which may be of the uni-directirmal electric type although it is obvious that any other suitable type of motor may be utilized if desired. The motor 6 is deachably secured to the frame 5 and secured to the armatureshaft 7 of this motor is motor pinion 8 meshing with an internal 9 keyed to one end of a longitudinally extending horizontal driving or transmission shaft 10 herein arranged parallel with the motor axis and journaled at its opposite ends in a manner hereinafter described within the upstanding supports 3 and 4. The gears 8 and 9 are contained in a suitable casing or housing 11 detachably secured to the end bracket 3 and this casing is suitably perforat'ed at 12 to permit the armature shaft 7 to extend thereinto. The casing is preferably made of two parts to permit access to the interior'thereof. As shown. journaled on the shaft as by anti-friction bearings 13 is a haulage drum 14, while likewise journaled on this shaft as by anti-friction bearings 15 is a tail rope drum 16. In the present construction arranged at one end of the haulage drum 14 is a slow speed drive control means, generally designated 17, for this drum, while interposed between the adjacent ends of the drums 14, 16 is a fast speed drive control means 18 for the haulage drum. There is also provided a drive control, means generally designated 19, similar to the drive control means 18, for the tail rope drum 16.

Now referring to the improved drive and control means for the haulage drum 14 and moreparticularly to the slow speed drive for this drum, it will be noted that keyed to the shaft 10 is a spur pinion 20 constantly in mesh with a planetary drum driver gear 21 journaled on anti-friction bearings 22 carried by a stub shaft 23 supported by the drum 14 as clearly shown in Fig. 1. The gear 21 is constantly in mesh with an internal gear 24 herein formed integral with a rotatable reaction member 25. This reaction member 25 is provided with a hub portion 26 journaled in a roller bearing 27 carried by the end bracket 3. Arranged within this hub 26 are anti-friction bearings 28 in which the adjacent end of the shaft 10 is journaled. It will also be noted that the reaction member 25 is provided with a frictional braking surface 29 with which a suitable contractible brake band 30 cooperates. Now referring to the relatively high speed drive for the haul-' age drum 14 it will be observed that keyed to the shaft 10 intermediate its ends is a spur pinion 31 of greater diameter than the pinion 20 above referred to and constantly meshing with a planetary drum driver gear 32 journaled on anti-friction bearings supported by 'a stub shaft 33 carried by the drum 14. In

the present construction the drum driver gears 21 and 32 and their respectivesupporting structures are arranged at diametrically opposite sides of the drum14, thereby providing a balanced construction and the heavier gear 21 has a lighter stub shaft so that static and dynamic balance are secured. The drum driver gear 32 is in constant mesh with an internal gear 34 herein formed integral with a rotatable reaction member 35 journaled on anti-friction bearings similar to the bearings 28 for the member 25 but suitably supported by the shaft 10. This reaction member 35 is provided with a frictional braking surface with which a brake band 36, similar to the brake band 30, co-

operates. "Operating means for the brake U bands 30 and 36, as will hereinafter be described, are provided whereby these brake bands may be selectively tightened to hold one or the other of the reaction members 25,

35 stationary or loosened to permit free rotation of these reaction members. It will thus be seenthat upon application of the brake band. 30 the reaction member 25 is held against rotation, and upon driving of the pinion 20 by'the motor 6 the gear 21 rolls around the internal gear 24.as a trackway "and moves with it the winding drum 14 at a brake band 30, it will be noted that pivoted at 37 to one end of the brake band is a lever 38 in turn connected through a pivoted link 39 to the other end of the brake band. Pivotally connected at 40 to the outer end of this lever is a link 41 pivotally connected at 42 to a crank or arm 43 fixed to an operating shaft 44 having a suitable operating lever 45. The operating means for the brake band 36 includes a similar lever 46 and link 47, this lever being connected by a link 48 to a crank or arm 49 likewise secured to the shaft 44 and extendingin a direct-ion diametrically opposite with respect to the shaft from the crank 43. l/Vhen the lever is in the position shown in Fig. 2 the lever 38 is in its downward position, ap-

plying the brake band 30 while the lever 46 is in its upper released position. Upon swinging of thelever 45 from the position shown in Fig. 2 to the position shown in Fig. 3 the lever 38 is swung upwardly into its released position while the lever 46 is swung downwardly to apply the brake band 36. It will thus be seen that when one of the brake bands is applied the other is always released and that when the lever 45 is in its central or neutral position both'of the brake bands are released, thereby permitting the drum 14 to remain idle during running of the motor.

The driving means for the tail rope drum 16 is herein exactly the same as the high speed 5 trol mechanism similar to the control mechanism for the high speed drive for the haulage drum-14 and similarbear'ing and supporting structure is provided for the reaction member and shaft 10. Thedrums 14 and 16 all are provided with usual frictional brake surfaces 53 and 54: with which usual brake bands cooperate for braking the drums when the latter are disconnected from their drive.

In the use of the improved double drum hoist, the. control means 17 for the haulage drum i l is operated toeifect movement of the drag scraper at a relatively slow speed to effect the digging and loading function of the drag scraper, while the drive control means 18 is operated to effect rotation of the haulage drum at a relatively high speed to efi'ect movement of the loaded scraper to effect its hauling function, that is,to efl'ectmovement ofthe loaded scraper from its loading position to its position wherein the material is discharged into the chute or car. The drive control means 19 for the tail rope drum 16 is operated to effect rotation of this-drum at a speed similar to the high speed drive for the drum 1-l to move the empty drag scraper rapidly from its discharging position back to its digging and loading position. These and other uses and advantages of the improved hoisting mechanism will be clearly apparent to those skilled in theart.

As a result of this invention, it Wi ll be noted that improved driving and controlling mech anism fora hoistdrum is provided, by means of which two predetermined speeds of rotation are possible, and also a wide range of fractional speeds based on each of the predetermined speeds. Moreover, while a common drive shaft is provided, separate drive trains arranged primarily at opposite ends of the drum and arranged so that good dynamic balance is secured are employed, and each is provided with a frictionally controlled reaction member permitting wide range of control.

As a further result of this invention it will benoted that an improved double drum hoist is provided especially adapted to use with the so-called slasher system of handling ore or like materials wherein there is provided improved driving means for the drums and improved and simplified controlling means therefor. It will further be noted that an improved double drum portable hoist is provided of a comparatively high powered, and compact character. It will further be noted that an improved plural speed drive is provided for the haulage drumof a double drum slusher hoist, thereby increasing its efficiency in drag scraper loading, it being possible to operate the scraper in an improved manner during digging and loading while at the same time providing means for rapidly moving the loaded scraper toward its Clio charging position.

While there is in this application specifically described one form which the invention may assume in practice, it will be understood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or thescope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. In a hoisting mechanism, a pair of coaxial relatively rotatable winding drums, a motor, and driving connections between said motor and drums including means for eifecting rotation of one of said drums at either a relatively high or a relatively low winding speed, said driving connections comprising gear trains individual to each drum.

2-. In a hoisting mechanism, a motor, a pair of coaxial relatively rotatable winding drums, driving connections between said motor and one of said drums for driving the latter at a relatively high or a relatively low speed, and driving connections between said motor and said other drum for driving the latter at a relatively high speed.

3. In a hoisting mechanism, a motor, a pair of relatively rotatable winding drums, and driving connections between said motor and drums for driving one of the latter at a relatively high or a. relatively low speed including a low speed planetary drive control means and a high speed planetary drive control means.

4:. In a hoisting mechanism, a motor, a pair of relatively rotatable winding drums, and driving connections between said motor and drums for driving one of the latter at a relatively high or a relatively low speed including a low speed planetary drive control means and a high speed planetary drive control means, and a separate planetary drive control means for said other drum.

5. In a hoisting mechanism, a motor, a pair of relatively rotatable winding drums, and

driving connections between said motor and drums for driving one of the latter at a relatively high or a relatively low speed including a low speed planetary drive control means and a high speed planetary drive control means, and a separate high speed planetary drive control means for said other drum.

6. In a hoisting mechanism, a motor, a pair of relatively rotatable winding drums, and driving connections between said motor and drums including planetary drive control means foreach drum for effecting drum rotation at one speed and a separate and distinct planetary drive control means for one of said drums for eflecting rotation thereof at a different speed.

7. In a hoistingmechanism, a motor, a pair of relatively rotatable winding drums, and driving connections between said motor and drums including planetary drive control means for each drum for effecting drum rotation at a slow speed and a separate and distinct planetary drive control means for one of said drums for effecting rotation thereof at a fastspeed.

8. In a hoisting mechanism, a motor,a pair of relatively rotatable winding drums, a shaft on which said drums are journaled, driving connections between said motor and said shaft, driving connections between said shaft and drums for effecting drum rotation at one speed, and a separate driving connection between said shaft and one of said drums for efiecting rotation thereof at a different speed. V

9. In a hoisting mechanism, a motor, a pair of relatively rotatable winding drums, a shaft on which said drums are journaled, driving connections between said shaft and one of said drums for effecting drum rotation at a slow speed, and a separate driving connection between said shaft and one of said drums for effecting rotation thereof 'at a fast speed. p

10. In a hoisting mechanism, a motor, a pair of relatively rotatable winding drums, a shaft on which said drums are journaled,

driving connections between said motor and said shaft, a slow speed driving connection between said shaft and one of said drums, and separate fast speed driving connections between. said shaft and both of said drums.

' 11. In a hoisting mechanism, a motor, a air of relatively rotatable winding drums, a shaft on which said drums are journaled, driving connections between said motor and said shaft, driving connections between said shaft and said drums for effecting drum rotation at one speed including a separate drive control means for each drum, and driving connections between said shaft and one of said drums for effecting drum rotation at a different speed including drive control means separate and distinct from aforesaid drive contr lmeans.

12. In a hoisting mechanism, a motor, a pair of relatively rotatable winding drums, a shaft on which said drums are journaled, driving connections between said motor and shaft, driving connections between said shaft and said drums for effecting drum rotation at one speed including separate frictional drive control means for each drum, and driv ing connections between said shaft and one of said drums for effecting drum rotation at a different speed including a frictional driving control means separate and distinct from aforesald drlve control means.

18. In a hoisting mechanism, a motor, a

pairof relatively rotatable winding drums,

planetary drive control means for each drum,

and driving connections between said shaft and one of said drums for effecting drum rotation at a different speed includinga planetary'drive control means separate and distinct from aforesaid planetary drive control means. I

p 14-. In a hoisting mechanism, a motor, a pair, of relatively rotatable winding drums, driving connections between said motor and one of said drums for effecting drum rotation at either a relatively high or a relatively low speed including a fast speed drive control means and a slow speed drive control means, means for effecting operation of one of said drive control means when the other is released including a common manual control element, and separate driving connections between said motor and said other drum.

15. In a hoisting mechanism, a motor, a pair of relatively rotatable winding drums, a shaft on whichsaid drums are journaled, driving connections between said motor and said shaft, three pinions fixed to said shaft, two of the same size and the third of a smaller size, driving connections between said small pinion and one of said drums for effectdrum rotation at a relatively low speed, driving connections between one of said larger pinions and said drum for effecting rotation thereof at a relatively high speed, and driving connections between said other large pinion and said other drum.

16. In a hoisting mechanism, a motor, a pair of relatively rotatable winding drums, plural'speed planetary driving connections between said motor and one of said drums, and a separate planetary driving connection for said other drum.

17. In a hoisting mechanism, a motor, a pair of relatively rotatable winding drums, plural speed frictionally controlled planetary driving connections between said motor and one of said drums, and a separate frictionally controlled planetary driving connection for said other drum.

In testimony whereof I affix my signature.

ROBERT C. OSGOOD. 

